Water Requirement of Different Crops - AgriBooks

Water Requirement of Different Crops – AgriBooks

June 9, 2022 no responses

Water Requirement of Crop: Water requirement of crop is the quantity of water regardless of source, needed for normal crop growth and yield in a period of time at a place and may be supplied by precipitation or by irrigation or by both.

Water requirement (WR) is therefore, demand and the supply would consist of contribution from irrigation, effective rainfall and soil profile contribution including that from shallow water tables (S)

Under field conditions, it is difficult to determine evaporation and transpiration separately. They are estimated together as evapotranspiration (ET).

Demand based Water Requirement:
WR = T + E + WP + WL + WSP or WR = CU + WL + WSP (where CU = E+T+WP)
Supply based Water Requirement:
WR = IR + ER + S

Where,
WR = Water Requirement
T = Transpiration loss
E = Evaporation loss
WP = Water used by plant in metabolic use
WL = Water losses
WSP = Water used for special purposes
IR = Irrigation requirement
ER = Effective Rainfall
S = Soil Moisture

Water Requirement of Different Crops is mentioned below:

Crops	Water requirement (mm)
Rice	900-2500
Wheat	450-650
Sorghum	450-650
Maize	500-800
Sugarcane	1500-2500
Groundnut	500-700
Cotton	700-1300
Soybean	450-700
Tobacco	400-600
Tomato	600-800
Potato	500-700
Onion	350-550
Chilli	500
Sunflower	350-500
Castor	500
Dolichus been	300-500
Cabbage	380-500
Pea	350-500
Banana	1200-2200
Citrus	900-1200
Pineapple	700-1000
Ray	400-450
Grapes	500-1200
Pigeon pea	300-350
Cow pea	250-300
Mung bean	150-250
Urdbean	200-250
Cluster bean	200-250
Chick pea	250-300
Field pea	350-500
Lentil	150-200
Sesame	300-350
Rapeseed Mustard	300-350
Taramira	150-200
Safflower	200-250
Sunflower	350-400
Linseed	350-500
Berseem	800-900
Lucerne	1800-2000
Radish	230-300
Turnip	250-300
Carrot	225-300
Beet root	330-350
Garlic	300-500
Jute	500-600